New salmon lice treatment may replace "red list" pesticide

A major Scottish fish farming company is to test hydrogen peroxide for the control of sea lice on salmon. The chemical has been used successfully abroad and looks a promising replacement for the "red list" pesticide dichlorvos.

Dichlorvos has been used by the fish farming industry to control sea lice for many years. The Department of the Environment has estimated that 15 tonnes of the chemical were released in UK waters in 1990.

Dichlorvos is highly toxic to many marine animal larvae at low concentrations and has been placed on the official "red list" for that reason. The Government is committed to reducing inputs of substances on the list to marine waters to 50

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